Answer:
The reaction of ethyl acetoacetate with 1,3-Dibromopropane and 2 moles of Sodium Ethoxide in Ethanol.
Explanation:
The structure of ethyl acetoacetate is shown below:
The structure of 1,3-dibromopropane is shown below:
Ethyl acetoacetate on reaction with sodium ethoxide in ethanol forms a carbanion intermediate and the formation of carbanion takes place twice and form a cyclic ring.
The entire reaction is shown below:
The structure of C9H14O3 is shown in the chemical reaction that is shown below: